package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.pojo.Dish;
import com.itheima.reggie.pojo.DishFlavor;
import com.itheima.reggie.pojo.Setmeal;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;

    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品信息
        this.save(dishDto);
        //保存菜品对应的口味信息
        Long dishId = dishDto.getId();
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors.forEach(flavor -> {
            flavor.setDishId(dishId);
        });
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表中查询
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询菜品对应的口味信息，从dish_flavor表中查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品对应口味数据——dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dishDto.getId());
        dishFlavorService.remove(queryWrapper);

        //添加当前提交的口味数据——dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().peek((item) -> item.setDishId(dishDto.getId())).toList();

        dishFlavorService.saveBatch(flavors);
    }

    @Override
    @Transactional
    public void updateStatus(List<Long> ids, Integer i) {
        //查询所有选中的菜品
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(Dish::getId,ids);
        List<Dish> dishes = this.list(queryWrapper);
        //将dishes中的每一个套餐的状态设置为i
        dishes.stream().peek((item)-> item.setStatus(i)).toList();
        //批量更新
        this.updateBatchById(dishes);
    }
}
